METHOD AND APPARATUS TO CORRECT DIGITAL IMAGE BLUR DUE TO MOTION OF SUBJECT OR IMAGING DEVICE
First Claim
1. A method for use in an imager, comprising:
- while capturing an image, measuring motion of the imager and moving an image sensor relative in a direction opposite to a direction of the imager motion.
3 Assignments
0 Petitions
Accused Products
Abstract
Signal processing techniques are applied to digital image data to remove the distortion caused by motion of the camera, or the movement of the subject being photographed, or defective optics, or optical distortion from other sources. When the image is captured, the effect of relative motion between the camera and the subject is that it transforms the true image into a blurred image according to a 2-dimensional transfer function. The 2-dimensional transfer function representing the motion is derived using blind estimation techniques or by using information from sensors that detect the motion. The transfer function is inverted and used to define a corrective filter. The filter is applied to the image and the blur due to the motion is removed, restoring the correct image. Another embodiment uses the transfer function to avoid blur by combining multiple consecutive images taken at a fast shutter speed.
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Citations
8 Claims
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1. A method for use in an imager, comprising:
while capturing an image, measuring motion of the imager and moving an image sensor relative in a direction opposite to a direction of the imager motion.
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2. A camera, comprising:
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an image sensor configured to capture an image; a motion sensor configured to measure motion of the camera while the image is being captured; and an image sensor adjuster configured to move the image sensor relative to the camera in a direction opposite to a direction of the camera motion while the image is being captured. - View Dependent Claims (3, 4)
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5. A method for use in an imager, the method comprising:
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measuring motion of the imager; moving an image sensor to counteract the motion; and capturing the image using the image sensor after the image sensor is moved.
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6. A camera, comprising:
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an image sensor; a motion sensor configured to measure motion of the camera; and an image sensor mover, configured to move the image sensor to counteract the motion; and wherein the image sensor is configured to capture an image after being moved by the image sensor mover. - View Dependent Claims (7, 8)
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Specification